Not Autistic but my partner is

I love my partner, she has made my life exceptionally better since arriving in it. She is Autistic and has been very clear about that from the beginning of our relationship. I notice that she consistently brings up her autism and points out her behaviors as being because of her autism. As an example, she points out every time she stims and will text me when she's stimming to let me know. When we're together she goes out of her way to point out that she's Autistic. I'm a therapist who has worked with children with autism and have an extensive knowledge on it and when she explains to me that her behaviors are due to her autism, part of me gets frustrated as though she doesn't think im listening or that I don't understand what autism is/what it looks like. Basically, I'm not sure how to respond when she says these things. I want to be supportive and have mentioned several times that I love all of her. Any thoughts or suggestions welcomed!